package cn.threecubic.springcloud.controller;

import cn.threecubic.springcloud.entities.CommonResult;
import cn.threecubic.springcloud.entities.Payment;
import cn.threecubic.springcloud.lb.LoadBalance;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.util.CollectionUtils;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import java.net.URI;
import java.util.List;

/**
 * @author Terminator
 * @date 2021/10/15 17:14
 */
@RestController
@Slf4j
public class OrderController {

    //    public static final String PAYMENT_URL = "http://localhost:8001";
    // 通过服务名访问
    public static final String PAYMENT_URL = "http://cloud-payment-service";

    @Autowired
    private RestTemplate restTemplate;

    @Autowired
    private LoadBalance loadBalance;

    @Autowired
    private DiscoveryClient discoveryClient;

    @GetMapping("/consumer/payment/create")
    public CommonResult create(Payment payment) {
        return restTemplate.postForObject(PAYMENT_URL + "/payment/create", payment, CommonResult.class);
    }

    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Payment> getPayMent(@PathVariable("id") Long id) {
        return restTemplate.getForObject(PAYMENT_URL.concat("/payment/get/").concat(id.toString()), CommonResult.class);
    }

    @GetMapping("/consumer/payment/getForEntity/{id}")
    public CommonResult<Payment> getPayment2(@PathVariable("id") Long id) {
        ResponseEntity<CommonResult> entity = restTemplate.getForEntity(PAYMENT_URL.concat("/payment/get/").concat(id.toString()), CommonResult.class);
        if (entity.getStatusCode().is2xxSuccessful()) {
            return entity.getBody();
        } else {
            return new CommonResult<>(444, "操作失败");
        }
    }

    @GetMapping("/consumer/payment/lb")
    public String getPaymentLB() {
        List<ServiceInstance> instances = discoveryClient.getInstances("cloud-payment-service");
        if (CollectionUtils.isEmpty(instances)) {
            return null;
        }
        ServiceInstance instance = loadBalance.instance(instances);
        URI uri = instance.getUri();
        return restTemplate.getForObject(uri.toString().concat("/payment/lb"), String.class);
    }

    @GetMapping("/consumer/payment/zipkin")
    public String paymentZipkin() {
        String res = restTemplate.getForObject("http://localhost:8001/payment/zipkin", String.class);
        return res;
    }


}
